Sure! Here's the requested content in spun format with synonyms:
Cathy adores Philip
and Foster.
Cassandra Fred, and also Frank.
Philip captures the love of Cara, and also Ferb.
Cassandra being with Finn and Frank.
Philip means the world to Candy, and also Frank.
Candace has a deep connection with both Phineas and Ferb.
I hope you find these variations helpful!